600V FRED Pt® Gen 5 Hyperfast Ultrafast Rectifiers Vishay 600V FRED Pt® Gen 5 Hyperfast and Ultrafast Rectifiers feature low conduction and switching losses and are ideal for high-frequency converters. The rectifiers are specifically designed to improve the efficiency of PFC and output rectification stages of EV/HEV battery charging stations. This includes the booster stage of solar inverters and UPS applications. The devices are perfectly matched to operate with MOSFETs or high-speed IGBTs.